highly significantp < 0.001
Results Manipulation check – Level 0 Results of the manipulation check (level 0) confirmed a highly significant main effect of contours on both edginess [ F (1, 196) = 2567.11, p < 0.001, η 2 g = 0.83) and roundness [ F (1,196) = 2173.42, p < 0.001, η 2 g = 0.82] ratings.